106 



pressed near the suture. Inner lip incrusted ; columella sinuous, short ; 

 outer lip produced in advance. 



This genus seems to be allied in many of its characters to Cominella 

 and Truncaria. Like them, it is compressed adjoining the suture. It 

 shows no trace of umbilicus, as seen in most of the Buccinidse, but its 

 most distinctive character is in its obliquely subtruncated columella, 

 which does not reach to the anterior end of the shell. 



E. TRUNCATA, Gabb. PI. 31. fig. 80. Miocene, San Domingo, W- L 



Genus BRACHYSPHINGUS, Gabb. Shell bucciniform, short, robust, 

 thick ; spire low ; aperture large, notched anteriorly ; outer lip simple ; 

 inner lip incrusted with a smooth callus ; surface longitudinally ribbed or 

 striate. Allied probably to Cominella or VolutJiarpa. 



B. LIBATUS, Gabb. PI. 81, fig. 81. Cretaceous, California. 



Genus LACINIA, Conrad. Globose ; pillar lip widely reflected, with 

 a heavy posterior callus ; basal emargination profound ; base dilated ; 

 aperture with a posterior channel ; outer lip simple. 



L. ALVEATA, Conr. (=PYBULA SMITHII, Lea). PI. 31, fig. 84. 

 Eocene, Ala. 



This does not differ very much from the -recent Cominella maculata, 

 Martyn. 



Genus HAYDENIA, Gabb. Shell massive, allied, in general form, to 

 OUva, spire low. Outer lip simple, not thickened nor crenulate ; inner 

 lip incrusted, callus marked posteriorly, without teeth or folds ; canal 

 slightly recurved ; anterior extremity of the mouth notched, and a small 

 sinus at the posterior extremity of the aperture, where the outer lip unites 

 with the body- whorl. Surface ornamented as in some of the Buccinidse. 

 This curious form is probably a link between Buccinum and Volutharpa. 



H. IMPRESSA, Gabb. PI. 31, fig. 82. Cretaceous, California. 



Sub-Family PHOTISUE. 



Genus BUCCITRITON, Conrad. Genus not characterized. One of the 

 typical specimens of B. Sagenum has a single varix on the back of the 

 the body-whorl but the other specimens are without it, so that its non- 

 absorption may be regarded as accidental. B. altum is a different type of 

 shell entirely, and looks something like a Truncaria. 



Sagenella, Conrad, also un characterized, judging from the type, is 

 identical with Buccitriton. 



B. CANCELLATUM, Lea (= SAGENUM, Conr.) PL 31, fig. 83. Alabama. 

 B. ALTUM, Conr. PL 31, fig. 85. Eocene, Texas. 



